Mid-term Study Aid

What is physical response identifies a colloid?

• the Tyndall effect

• oxidation

• chemical bonding

• color absorption

Which process separates salt from water?

• condensation

• filtration

• magnetic field generation

• distillation

What type of substance has multiple components that are chemically combined in fixed proportions?

• colloid

• compound

• homogeneous mixture

• suspension

How can a colloid be distinguished from a homogeneous mixture?

• by chemical reaction

• by chromatography

• by indirect evidence

• by distillation

What do chemists want to learn?

• how life is created

• how atoms and molecules interact

• what causes gravity

• where the universe ends

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

If a building is 174 m tall, what is its height in ft? (1 m = 3.28 ft)

• 57.07 ft

• 530.5 m

• 53.05 ft

• 570.72 ft

What is the law of conservation of mass?

• Mass is always greater than volume

• Density is the mass divided by volume

• Matter cannot be created or destroyed

• Mass depends on the force of gravity

Tags

NGSS.MS-PS1-5

What happens to a substance when the molecules lose so much energy that they can only vibrate and become completely subject to cohesion?

• It melts

• It freezes

• It sublimates

• It adheres to another substance

Tags

NGSS.MS-PS1-4

If some of the milk from a pitcher was poured into a glass, the milk in the pitcher and the milk in the glass would have the same

• volume

• mass

• density

• all of the above

A substance that has a definite mass and definite volume but not a definite shape is a

• solid

• liquid

• molecule

• gas

Tags

NGSS.MS-PS1-4